American Cyanamid principles
Guidelines set out in the case of American Cyanamid Co (No 1) v Ethicon Ltd  UKHL 1 (05 February 1975) to establish whether an applicant has an adequate case for the granting of an interim injunction ( www.practicallaw.com/A35414). The guidelines consider:
Is there a serious issue to be tried?
If so, what is the balance of convenience?
For further guidance, see Practice note, Injunctions: an overview ( www.practicallaw.com/3-619-2826) .